Finding the Fourth Proportional to 18,712,556.48, 25,825,568.64 and 11,371,589.12
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Solution
The fourth proportional to 18,712,556.48, 25,825,568.64 and 11,371,589.12 is: 15,694,154.65
Step by Step Solution
- Step 1: Write the proportion equation
18,712,556.48 : 25,825,568.64 = 11,371,589.12 : x - Step 2: Convert to fraction form
18,712,556.48/25,825,568.64 = 11,371,589.12/x - Step 3: Cross multiply
18,712,556.48x = 25,825,568.64 × 11,371,589.12 - Step 4: Simplify right side
18,712,556.48x = 293,677,755,364,437.19 - Step 5: Solve for x
x = 293,677,755,364,437.19/18,712,556.48 - Step 6: Final answer
x = 15,694,154.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.